Trek Madone SL 5 Gen 8

Madone SL 5 Gen 8 is a lightweight aero road bike that brings elite racing tech to a lower price point. It offers similar aero benefits to the pricier Madone SLR Gen 8 models, but with a more economical OCLV 500 Carbon layup and two-piece cockpit with hidden cable routing. A Shimano 105 groupset, alloy handlebars, and alloy wheels keep the price down while still delivering clean mechanical shifting you can trust.

Our lightest Madone SL Disc ever

New light and fast aero tube shaping paired with light-yet-economical 500 Series OCLV Carbon makes Gen 8 our lightest Madone SL Disc f/s ever and the ideal climbing bike.

Redefines what fast looks like

Revolutionary new Full System Foil aero tube shapes improve airflow over the whole bike while maintaining the lightness climbers crave. Plus, the bike’s entire rider system was meticulously designed and rigorously tested to be faster everywhere.



80% more vertically compliant IsoFlow

We refined our race-focused comfort tech to be lighter and have nearly double the vertical compliance so you can ride stronger longer.

Rooted in racing

Madone SL was informed by feedback from Lidl-Trek's fastest sprinters and climbers.

Adjustable aero cockpit

Madone Gen 8 features hoods that are narrower than the drops so you can adjust your positioning to prioritize aerodynamics or power. Plus, the two-piece design lets you quickly and easily dial in your fit.

Add-on aero bottles to make your whole bike faster

Add-on RSL Aero Bottles and Cages were designed with Madone Full System Foil aero shapes to make the whole rider system even faster.

Frame 500 Series OCLV Carbon, Full System Foil tube shaping, IsoFlow seat tube, RCS Headset System, electronic or mechanical routing, removable aero chainkeeper, T47 BB, flat mount disc, UDH, 142x12mm thru axle Fork Madone Gen 8 full carbon, tapered carbon steerer, internal brake routing, flat mount disc, 12x100mm chamfered thru axle Tire Bontrager Aeolus Pro, Tubeless Ready, aramid bead, 120tpi, 700x28mm Tire Part Bontrager TLR sealant, 6oz Hub Front Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle Hub Rear Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle Rim Bontrager Paradigm 23, Tubeless Ready, 24-hole, 23mm width, Presta valve Skewer Front Bontrager Switch chamfered thru axle Skewer Rear Bontrager Switch chamfered thru axle, removable lever Shifter Shimano 105 R7120, 12 speed // Shimano 105 R7120, 12 speed Front Derailleur Shimano 105 R7100, braze-on, down swing Rear Derailleur Shimano 105 R7100, 36T max cog Crank Shimano 105 R7100, 50/34, 165mm length Bottom Bracket Praxis, T47 threaded, internal bearing Cassette Shimano 105 7101, 11-34, 12 speed Chain Shimano SLX M7100, 12 speed Brake Shimano 105 hydraulic disc, flat mount Brake Rotor Shimano CL700, centerlock, 160mm Saddle Bontrager Aeolus Elite, austenite rails, 145mm width Seatpost Madone aero carbon seatpost, 0mm offset, short length Handlebar Bontrager Comp, alloy, 31.8mm, 80mm reach, 121mm drop, 36cm control width, 40cm drop width Stem Trek RCS Pro, -7 degree, 80mm length

Geometry Chart

B B Drop 7.2 Chainstay Length 41 Eff Top Tube 51.7 Frame Reach 37 Frame Size Letter XS Frame Stack 50.7 Head Angle 71.6° Head Tube Length 10 Offset 5 Saddle Rail Height Max Short 61.2 Saddle Rail Height Max Tall 65.4 Saddle Rail Height Min Short 54.9 Saddle Rail Height Min Tall 59.2 Seat Tube 40.4 Seat Tube Angle 73.8° Standover 70.4 Trail 6.1 Wheelbase 97.1 Wheel Size 700c